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Seminar - Multi-Objective Robust Optimization for a Centrifugal Impeller with Operational Flexibility and Discretized Interval Uncertainty by Dr. Yu-Tai Lee
日期:2017 年 09 月 28 日 ( 星期四)
Time:2:00 pm – 3:00 pm
Venue:EF305

Abstract:

In this presentation, I use a centrifugal impeller to demonstrate how a flexible multi-objective robust optimization works. The background review provides some basic knowledge in turbomachinery design and optimization. An efficient reduced-order design method for the centrifugal impeller and its validation will be introduced and coupled with the optimization schemes. Based on the design requirements for an impeller, Genetic Algorithm (GA) is adopted for the optimization. The concept of operational flexibility is applied and compared to the impeller designs predicted with both the deterministic optimization method and the robust optimization method with discretized interval uncertainty.

Bio-sketch:

Dr. Yu-Tai Lee received a bachelor’s degree from the Mechanical Engineering Department of the National Taiwan University, and a master’s degree and a doctoral degree from the Mechanics and Hydraulics of the University of Iowa. Before joining the Naval Surface Warfare Center, Carderock Division (NSWCCD), West Bethesda, MD, he worked for the Westinghouse R&D Center, Churchill, PA. Throughout his forty-two-year career, he has focused his research and development efforts on the flow analyses and designs of turbomachinery systems. He is internationally recognized for his development of robust computational methods, which form the backbone of the computational tool set that is used to assess and design ship propulsion and shipboard machinery, and to optimize hydrodynamic performance while simultaneously minimizing hydroacoustic noise. He was awarded three patents related to the shipboard turbomachinery designs. He is a Professional Engineer and a fellow of ASME. He is the recipient of many honors which include 2017 ASME Henry R. Worthington Medal, 2010 Agency Award for the Federal Engineer of the Year from the National Society of Professional Engineers, 2008 NSWCCD Command Teaming Award as the lead of the Lift Fan Design Team for the Navy’s Ship-to-Shore Connectors, and 2008 ASME Fluids Engineering Division Fluids Machinery Design Award. Dr. Lee has recently retired from NSWCCD and focuses on the volunteer work as the chair of the Executive Committee of the Fluids Engineering Division and the Associate Editor for the Journal of Mechanical Design of the ASME.